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Questions & Answers
Does this have an adjustable gas setup for shooting suppressed? Expert Answer

No, it does not have an adjustable gas block.

by Jonathan D., Gear Expert, September 30, 2019
Will a dead air nomad suppressor fit with this upper’s handguard? Expert Answer

More than likely you will run into clearance issues. I would recommend using a different handguard in order to allow the Dead Air Nomad to fit properly.

by Ethan, Gear Expert, January 13, 2022
Customer Reviews
Helpful Positive Review
Nice upper by Eric, September 3, 2022
This upper looks & feels of quality craftsmanship. I haven't had a chance to run it yet, but it function checks properly. My only issue is that it was listed as complete, however upon arrival there was no bcg/ch. Not a deal breaker, just added expens...
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3/3 found this helpful
Helpful Positive Review
Great upper for a suppressor host by PoorCapitalist, Verified Owner, September 20, 2024
This upper looks great. It has one of, if not the best rail Aero makes. It came in flaws condition, not scratches or scuff and everything is assembled tight with no wiggle on the handguard. The middle m-lok slot on the bottom isn't usable due to the ...
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2/2 found this helpful
Helpful Positive Review
Itsagoodupper by Jason, January 31, 2019
First build and couldn't be happier. Functioned as it should. Only have ten rounds through it and still have wood. Optics planet was great to deal with and had a fair price. Will order from them again.
4/4 found this helpful
Helpful Positive Review
Well built, flawless function thus far by Dylan, Verified Owner, March 17, 2020
I coupled this with an Aero pistol lower (came with their carbine buffer) direct from Aero Precision. I’ve run ... 11 different types of ammo through it including 3 subsonic loads, and have not experienced any malfunctions or failures as of yet. Subs...
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30/30 found this helpful
Helpful Positive Review
Aero upper by Krouse, March 30, 2021
Looks good, fires fine. Only discrepancy is it came with a used dust cover, not sure why I got a brand new upper and the dust cover is beat up. I don’t care, just thought I’d write that here for the manufacturer to possibly read.
6/8 found this helpful
Helpful Positive Review
Aero Precision 300 BLK 8" upper by Sully, January 20, 2020
I ordered the Aero Precision FDE 8" 300 Blackout upper from Optics Planet. Their price was the best available and they have it in stock when no one elsd did. The fit and finish are great. The upper fits my Aero Precision lower perfectly. You will...
Read More...
2/2 found this helpful
Read All 19 Reviews

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Prices have been cut drastically on this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts, but you'll still get the best deal out there. This offer won't last long, so don't miss out!
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ATTENTION! We currently do not ship this product to AK, CA, HI, IL, NY, WA, P.O. Boxes, and U.S. Territories.

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Aero Precision M4E1 Threaded 8in .300 Blackout Complete Upper Receiver with Flash Hider

Create an astonishing rifle build with the craftsmanship and features packed into this Aero Precision M4E1 Threaded 8in .300 Blackout Complete Upper Receiver. Each of these AR15 Upper Receivers designed by Aero Precision contain an ATLAS S-One Handguard that is compatible with low profile gas blocks as well as Mil-Spec AR15 uppers and barrels. This Aero Precision M4E1 Threaded 8in .300 Blackout Assembled Upper Receiver also contains a 4150 Chrome Moly Vanadium barrel with a QPQ finish that protects it from corrosion inside and out, ensuring maximum performance with a long lifespan. Adding this receiver to your weapon build greatly improves your shooting experience. QD sling sockets allow you to attach a sling for comfortable carry, the construction is robust while still remaining lightweight and you can pick which rail best suits you to attach your favorite optics and accessories for enhanced accuracy in the field. Install this Aero Precision M4E1 Threaded 8in .300 Blackout Complete Upper Receiver w/ ATLAS S-ONE Handguard to truly experience what your firearm is capable of at the range, on a hunt or anywhere else you demand high performance with every pull of the trigger.image

WARNING: California`s Proposition 65

Specifications for Aero Precision M4E1 Threaded 8in .300 Blackout Complete Upper Receiver with Flash Hider:

Manufacturer: Aero Precision
Caliber: .300 AAC Blackout
Barrel Length: 8 in
Gas System Length: Pistol Length
Barrel Twist Rate: 1-7
Threads per Inch: 5/8x24
Muzzle Device: A2 Flash Hider
Gun Model: AR-15
Condition: New
Fabric/Material: Chrome Moly Vanadium
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 7 in
Gun Make: AR Platform
Weight: 18 oz
Magazine Included: No
Country of Origin: USA

Features of Aero Precision M4E1 Threaded 8in .300 Blackout Complete Upper Receiver with Flash Hider:

  • M4E1 Threaded Upper Receiver Features:
  • New enhanced forging that gives the upper receiver a "billet look"
  • New Picatinny profile that blends seamlessly with our Enhanced Series Handguards
  • M4 Feedramps
  • .250 takedown pin holes
  • Laser engraved T-marks
  • Includes port door and forward assist installed
  • ATLAS S-ONE Handguard Features:
  • Front and rear Picatinny rail
  • Eliminated center of top rail for weight reduction
  • Indexing grooves in 12:00 position for positive grip control
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Compatible with low profile gas blocks
  • 1.3in Inside diameter
  • 1.5in Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels
  • 8in .300 Blackout Barrel Features:
  • Length: 8in
  • Twist: 1 in 7
  • Muzzle: 5/8x24 Threaded
  • Material: 4150 Chrome Moly Vanadium
  • Finish: QPQ corrosion resistant finish both inside and out
  • Gas Block: .750
  • Gas Port: .109
  • Gas System Length: Pistol
  • Weight: 18oz
  • M4 Barrel Extension
  • HP and MPI Tested

Package Contents:

  • Aero Precision M4E1 Threaded 8in .300 Blackout Complete Upper Receiver with Flash Hider
  • ATLAS S-ONE Handguard of choice
  • 8in .300 Blackout CMV Barrel
  • Low Profile Gas Block and Pistol Length Gas Tube

Aero Precision M4E1 Threaded 8in .300 Blackout Complete Upper Receiver with Flash Hider Orderable Models

List of Orderable Models

  • Aero Precision Complete Upper Receiver, M4E1-T, 8in .300 Blackout BRL, 7in M-LOK ATLAS S-ONE HG, Anodized Black, APAR700301M1 , MPN: APAR700301M1 , UPC: 840014601707 , Code: 29D-UFH-M4E1T3008-APAR700301M1
  • Aero Precision M4E1 Threaded .300 Blackout Complete Upper Receiver, 8in, 1-7 Twist, 5/8x24 Thread, ATLAS R-ONE Handguard, Black Anodized, APAR700701M1 , MPN: APAR700701M1 , UPC: 840014608539 , Code: 29D-UFH-M4E1T3008-APAR700701M1
  • Aero Precision M4E1 Threaded .300 Blackout Complete Upper Receiver, 8in, 1-7 Twist, 5/8x24 Thread, ATLAS R-ONE Handguard, FDE Cerakote, APAR700711M1 , MPN: APAR700711M1 , UPC: 840014608546 , Code: 29D-UFH-M4E1T3008-APAR700711M1
  • Aero Precision Complete Upper Receiver, M4E1-T, 8in .300 Blackout BRL, 7in M-LOK ATLAS S-ONE HG, Cerakote, Flat Dark Earth, APAR700311M1 , MPN: APAR700311M1 , UPC: 840014601714 , Code: 29D-UFH-M4E1T3008-APAR700311M1

Aero Precision M4E1 Threaded 8in .300 Blackout Complete Upper Receiver with Flash Hider Unavailable & Discontinued Models

List of Unorderable Models

  • Aero Precision Complete Upper Receiver, M4E1-T, 8in .300 Blackout BRL, 7in KeyMod ATLAS S-ONE HG, Cerakote, Flat Dark Earth, APAR700211P1 , MPN: APAR700211P1 , Code: 29D-UFH-M4E1T3008-APAR700211P1
  • Demo, Aero Precision Complete Upper Receiver, M4E1-T, 8in .300 Blackout BRL, 7in M-LOK ATLAS S-ONE HG, Anodized Black, APAR700301M1 , MPN: APAR700301M1-DEMO , Code: 29D-UFH-M4E1T3008-APAR700301M1-DEMO
  • Aero Precision Complete Upper Receiver, M4E1-T, 8in .300 Blackout BRL, 7in KeyMod ATLAS S-ONE HG, Anodized Black, APAR700201P1 , MPN: APAR700201P1 , Code: 29D-UFH-M4E1T3008-APAR700201P1
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